Have been playing 1.12.2 AE2 plus AE Additions along with GTCEu, which recently implemented internal FE charging support for its battery buffers and chargers, but while it works fine charging vanilla AE2 terminals and p455w0rd's Wireless Terminal, I can't put AE Addtions Terminals into the slot, in which case the Charger from AE2, known for its extremely slow energy transfering rate, has become the one and only way to charge AE-Adds terminals.

I'm wondering that would FE-compat chargers from other mods like EIO and TF work as expected? Or it simply lacks support for FE/RF energy?

I've noticed this too, but I thought it was just an issue with wireless charging not working tried a wired enderio charger would not let me put the item in either. Version AE Additions 1.12-1.3.8